Druse (geology)

For other uses, see Druse.

File:Uvarovite-tuc09103f.jpg Druse of uvarovite from the Urals (size: 18.3 x 13.1 x 2.0 cm) File:Calcite-Dolomite-71009.jpg Pink dolomite druse with yellow calcite crystals, Ben Hogan Quarry, Lawrence County Zinc District, Arkansas (size: 14.9 x 8.5 x 3.7 cm)

In geological usage druse or druzy is a coating of fine crystals on a rock fracture surface, vein or within a vug or geode.

Occurrence

Druse occurs worldwide, the most common is perhaps quartz druse within voids in chert or agates. Garnet, calcite, dolomite and a variety of minerals may occur as druse coatings.

See also

• Crystal habit
• Miarolitic cavity

References

• Klein, Cornelis and Cornelius S Hurbut, Jr, Manual of Mineralogy, Wiley, 20th ed. 1985, P.199 ISBN 0-471-80580-7

ca:Drusa (mineralogia)